集成TRIZ的机加夹具方案公理化设计

发布时间：2018-03-05 05:15

本文选题：公理设计　切入点：TRIZ　出处：《仪器仪表学报》2017年04期 　论文类型：期刊论文

【摘要】：目前在制造企业中,机加夹具方案设计多依赖于设计者的经验,对已有夹具实例的重用度不高,整个方案设计过程缺乏科学的理论框架作为指导。针对该问题,将公理设计(AD)理论和发明问题解决理论(TRIZ)相结合,提出了集成TRIZ的机加夹具方案公理化设计方法。在构建机加夹具多级实例库的基础上,设计了机加夹具功能-结构分解与映射算法,将夹具方案生成过程转化为基于功能需求检索多级夹具实例的过程,从而可快速生成机加夹具初始方案,之后运用AD独立公理对初始方案进行耦合性分析,确定存在耦合的夹具功能;通过构建机加夹具方案设计属性与TRIZ冲突矩阵39个工程参数之间的关联表,将耦合夹具功能快速转化为TRIZ工程参数,并运用TRIZ冲突消解工具解决机加夹具方案中的功能耦合问题;提出了基于模糊信息公理的机加夹具方案评价方法,分别计算定性和定量的夹具评价指标的信息量,为夹具方案的优选提供科学的决策依据。最后以某航空发动机机匣铣削夹具的方案设计为例,验证了所提方法的有效性和可行性。
[Abstract]:At present, in manufacturing enterprises, the scheme design of machine fixture mostly depends on the designer's experience, the reuse degree of the existing fixture examples is not high, and the whole scheme design process lacks a scientific theoretical framework as the guidance. Based on the combination of axiomatic design theory and problem solving theory, an axiomatic design method of mechanical fixture scheme integrated with TRIZ is proposed. The algorithm of functional structure decomposition and mapping is designed. The process of fixture scheme generation is transformed into the process of retrieving multi-level fixture instances based on functional requirements, so that the initial scheme of machine plus fixture can be quickly generated. Then the coupling analysis of the initial scheme is made by using AD independent axiom, and the fixture function with coupling is determined, and the correlation table between the design attribute of machine plus fixture scheme and the 39 engineering parameters of TRIZ conflict matrix is constructed. The coupling fixture function is quickly transformed into TRIZ engineering parameter, and the TRIZ conflict resolution tool is used to solve the problem of functional coupling in the machine plus fixture scheme, and the evaluation method of the machine plus fixture scheme based on fuzzy information axiom is proposed. The information quantity of qualitative and quantitative fixture evaluation indexes is calculated, which provides a scientific decision basis for the optimal selection of fixture scheme. Finally, taking the scheme design of an aeroengine casing milling fixture as an example, The effectiveness and feasibility of the proposed method are verified.
【作者单位】：南京航空航天大学;江苏省精密与微细制造技术重点实验室;
【基金】：国家商用飞机制造工程技术研究中心创新基金(SAMC13-JS-15-021) 江苏省精密与微细制造技术重点实验室开放基金(ZAA1400105)项目资助
【分类号】：TG75

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